Roller.



A. E. BLIGHT.

ROLLER.

APPLIGATION FILED MAY 6,1909.

Patented Nov. 9, 1909.

i i ill hubd hwlrt L IIIIIII ventar':

umrun sTATES I ANDREW E. BLIGHT, 's TOTTENVILLE, NEW Yomi;

serum.

Specification be Iietiersltent.

Patented ov. 9 mos.

Appliction filed Kay 6,. 1809. Serial No. 484,258.

To all whom it may concern;

Be it; known (hut 1,.ANDREW El BLIGH'E,

e citiseirof the United Statesfresiding as Totteuville, Staten ISlilHtL-State; of New York, have invented ceiztain new and useful Improvementsin Rollers, ofwhich the following is s specification.

My invention relates to typewriters and has for its object to provide ameans whereby the elasticity and the thickness of the roller commonlyused on typewritiug Ina rately by typewrzt-mg machines costs using; memwere j chines may be varied.

in the use of the rollers of t'ypewriting machines commonly known in theare it has been found that a typewriting machine will operate best whenusing a certain number of sheets of paper or using paper of acertainthickuess, and, furthermore, it has been found that the rollerscommonly used in the art are sometimes made too hard or become too hardby reason of age which often causes the typehammers to crack and breakoil. Furthermore the rollers lose their elasticity and become hard andsmooth so that the paper cannot be moved as readily and accuthe turningof the rollers us when first: placed on the market.

invention provides a means for iug the elas icity or, eushioniug troller sue time 27; be desis thrkriess and number of sheets or paperthat it is desired to operate upoiu The invention eousiss otherfeatures:

1% the ferred; the demr fiorr Referring to the drawings Figure l.illustrates pers eetive View of the iuvention and Fig: 2 illustrates ehorizontel sectional view. V

Eeierriug i, l is as heavy tube hasing 5; rubber eushrouing surifeee 2.Fl'ugs 3 and s are loceted irrthe ends of the tube 1 tightly seal thetube sous to prevent the escape of any sir that may be contained in thetube or roller. Heads 5 and 6 are etteohed to the plugs 3 and 4 by meansof screws 7 and 18. .The heads 5 and 6 have hollow bearings 8 and 9which are used in mounting the roller in a typewriting mechine. rod 10extends through the plugs ure sroliesmzv vsrrecsuee'orehn" 6a theend'lifiheads and the bearings and firmly secures the pasts together.".lhe rod 1 is p 7 hollow in order to make therolfei: perfieetiy rigidend'g'i'eesuficiene surfabe fer tightly securing the plug and head ofone ondiof the roller and the plug and head of the other end. The hollowrodlQextendsthrough therbearings sothet it will. be directly 5 aresupported by the hollow tube and the hollow tube is directly supportedin the typewriting machine. The head 5 is secured to the hollow rodlbymeans of the screw 17 and the head 6 is forced on the tube 10 bypressure. A valve casing 11 is located in the heud'5 and is providedwith the usual cap 12 and puppet valve 15. This permits the airto beforced into the roller through the opening 16 in the plug 3 and preventsthe re turn of the air except as the valvs 15 may be pressed down bypressing on its stem. The head 6 is provided with the usual ratchetwheel for moving the roller step -by-step when it is desired to shiftthe paper in the machine in the manner Well known in the 1 Rings 13 and1% are forced on to the of the roller around the plugs 3 and Q 'llhistightly compresses the ends if i the roller endtl-ie plo s and Bandfurthe i e the rubber roller frictionally seizes the paper and thesurface of the roller being more or i juble by reason ef its: pueurmrrieshe Wil i s 7 paper rorrudthe rui-Juer on reurssrr re? w d uiipwi'fifiifififl fifhfi f paper with the pueuuuitie roller. The rigidity ofthe surface of the roller maybe yaried st will by forcing air into itsinterior or allowing it, to Furthermore the i diameter" roller may bevaried at will in the series manner in order that ditlerent quantitiesof paper may be inserted in the machine or paper of bhfiereet thicknessmay be operated upon. This permits the roller to press upon the paperuniformly what-. ever may be. the thickness of the sheets or the numberthereof and forms an adjust: ment of the roller to thecheracter of thework thut is desired to be accomplished.

ported'et its ends. The parts of the roller Furthermore the rigidity ofthe roller surhammer and prevents to a great degree the breaking of thehammer and reduces in a great measure the noise of the machine due tothe shar return of the hammer. Forcing air into the roller causes ittobecolne as I hard as it may be desired without changing the mass ofthe roller and without changing the power of the roller to frictionalseizing the paper to a material degree.

The invention may be varied by' those skilled in the art withoutdeparting from the spirit thereof. It may be used in connection with agreat many devices wherein the thickness or the pliability or therigidity of the roller is to be adjusted or varied. It

may be in fact embodied in a great many forms of constructions, whileyet involving the essence of the invention.

What I claim as new and desire to secure by Letters Patent is as followsrubber cushioning sui face, plugs pneumatically sealing the said platen,heads attached to said plugs, a valve located in one of the said heads,a hollow rod securely set in and attached to the said plugs and the saidheads and extended through the said roller, the extended hollow bearingslocated on the outside of the said rod, the said hollow rod extendinthrough the said hollow bearin s, rings $01 clenching the said platen tot e said plugs and heads whereby the thickness and pliability of theplaten may be varied.

.In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing witnesses.

ANDREW E. BLIGHT.

